[time-nuts] Just for Fun - Synergy Systems SSR-6T PPS Comparison
djl at montana.com
Thu Dec 20 06:44:01 UTC 2012
Hi David: I got my new SSR-6T today, quite prompt. I can't find a darn
thing about pinout or anything else on the Synergy site, nor can I
produce anything from Boogle. Where did you find the info? I have a call
in to Synergy, but I'm just wondering...
> A Day in the Life of Five PPS Sources..
> This probably does not qualify as a regular TimeNuts submission as there
> are no Tau's or 10^-12ths but I could not resist a simple scope capture
> the Pulse Per Second output of my new SSR-6t toy from Synergy Systems as
> performed its first right-out-of-the box site survey.
> See http://youtu.be/kOG9ImT2lvY
> This is video is a two minute replay of the PPS behavior of two PRS-10s,
> two TBolts, and the SSR-6t during it's initial 24 hour site survey.
> The scope captured the relationship of all five PPS outputs at one frame
> per second. The video clip replays 24 hours of captures at 1000 frames
> second. The whole day's PPS behavior is replayed in under two minutes.
> The Scope is externally triggered from a PRS-10 that
> is actively disciplined from a TBolt PPS. The Yellow Trace is a second
> PRS-10 that is also actively disciplined from the same TBolt. Hence the
> trigger point (center of screen) and the Yellow Trace compare the two
> PRS-10s that have been running in parallel for a couple of months.
> The Magenta Trace and the Blue Trace are two other TBolts. (These traces
> have the nice sharp risetime )
> Everybody is fed from a common antenna via a mini-circuits splitter.
> The Light Blue Trace is the new SSR-6t running in navigation mode. The
> spreading of the Light Blue Trace is the usual sawtooth dance that most
> GPS PPS outputs display -- The playback rate just smears all the
> sawtooth steps into a pretty waterfall.
> This is not intended to be a "scientific" submission but I hope someone
> finds it entertaining and enlightening view of the instantaneous PPS
> behavior of these devices.
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"Neither the voice of authority nor the weight of reason and argument
are as significant as experiment, for thence comes quiet to the mind."
De Erroribus Medicorum, R. Bacon, 13th century.
"If you don't know what it is, don't poke it."
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Dr. Don Latham AJ7LL
Six Mile Systems LLP
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Huson, MT, 59846
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